Trying to match up that claim with the claim of https://james.darpinian.com/satellites/?special=starlink that satellites should be visible at 12:10am this Saturday over Boston. 12:10am is nowhere close to dusk in Boston this time of year.
12:10 AM Saturday in your device's time zone. 6:10 PM Friday in Boston's time zone. It's on my to-do list to change the displayed time zone when you select a faraway location instead of your current location, but just figuring out which time zone a given location is in is a non-trivial problem. Time zones are kind of bonkers, as I'm sure you're aware.
I just pushed a fix for timezones. It should convert to the local timezone if you choose a faraway location, and show the correct timezone abbreviation.